This research is an investigation of how the lullaby, which is often viewed as purely a simple and pretty song, is a multifaceted vocal tradition that carries historical and cultural significance. As an exploration of how sociocultural factors impact the emotions expressed and the stories told in lullabies, this research encourages deeper examinations of lullaby texts in relation to the historical, cultural, and social aspects reflected in their textual themes. Through the close analysis of text and music of folk and art song lullabies, I propose that the lullaby's function extends beyond putting a baby to sleep; the further roles of the lullaby encompass cultural connections and therapeutic functions for both the parent and child. As a result of these sociocultural considerations, dialogue exists between the lullaby text and its music that do not always match the song's primary intent to provide peace and comfort.

Poor medical adherence attributed to patient compliance has impacted the medical community, at times, in a deleterious fashion. To combat this, the medical community has attempted to provide therapeutics in the form of absorption enhancing techniques. To improve the absorption rate techniques such as drug encapsulation using proteins, liposomes, or nanotransfersomes have been developed using mass spectrometry. These techniques, have aided in the enhanced absorption of analytes with low bioavailability, including curcumin, simvastatin, and lysozyme. Specifically, mass spectrometry allows for the development and monitoring of nanotransfersome encapsulated analytes and the permeation across the dermal membrane. This transdermal delivery would eliminate the problems encountered during first pass metabolism, while allowing for higher concentrations of analyte to be maintained in the blood serum. This can be coupled to a thermosensitive gelatin that provides for a dose control mechanism to be accomplished, allowing multiple doses to be delivered using one transdermal patch system. The novel delivery system developed using mass spectrometry, allows the analyte to be delivered into the circulatory system at a controlled dosage, via transdermal absorption. This system will aid in eliminating problems associated with patient compliance, as the patient is no longer reliant on memory to self-dose. Further, this system …

This research advances the literature on interracial marriage by using variables that align with the social contact hypothesis. The purpose of this project is to accurately gauge the exact social predictors influencing current attitudes towards Black and White interracial marriage. Multiple regression models containing social contact predictors are analyzed using data from the 2018 General Social Survey. The conclusive review of the literature summarizes age, region, and education as essential social contact predictors of attitudes towards interracial marriage. Therefore, the formulated hypotheses and multiple regression models measure this specific relationship controlling for other predictors such as sex and income. For Whites, the two most significant factors are age and living in the south vs. the west. Interestingly, a college education is not significant. For Blacks, the key contact variable that seems to matter is age. Baby boomers are less likely to favor interracial marriage. Overall, results show areas of convergence. Therefore, one's age is significant predictor for White and Black acceptance. However, it also shows divergence-region appears to only matter for Whites. Accordingly, younger Blacks and Whites were more likely to favor close relatives marrying individuals of the opposite race. Older Blacks and Whites were less likely to support interracial …

The story of Prussia's defeat at the Battles of Jena and Auerstedt and subsequent reform has dominated the historiography of Napoleonic Prussia. While Napoleon has received the vast majority of historical attention, those who have written on Prussia have focused on the Prussian reform movement or the Prussian army's campaigns against Napoleon. These historians present the Prussian army before 1807 as an ossified relic, a hopelessly backward and rigid army commanded by a series of septuagenarians. Apart from the 1806 campaign, these scholars scarcely address the field operations of the Prussian army during the French Wars (1792-1801). This thesis seeks to prove that the Prussian army during the War of the Bavarian Succession and the War of the First Coalition was still an effective fighting force by examining the field operation of the Prussian army from 1778-1793 and the reactions of Prussian thinkers to it. The history of the Prussian army from 1778-1806 challenges the narrative of the army as a force in decline. The Prussian army struggled in the War of the Bavarian Succession, and the war revealed two of its weaknesses, the lack of light troops and an uncoordinated strategic approach. However, many of the problems of the …

King Edward I of England's castle building program in Wales from 1282 to 1295 provides a unique event that can be studied in further detail. Edward's castle building program turns the conquest of Wales into an early example of what future English colonization would become. By examining the building of Conwy and Caernarvon in Wales and the accompanying social programs we are better able to understand how the English viewed conquest and colonization. The conquest spent approximately £35,000 on the building of the castles of Conwy and Caernarvon, a colossal sum for the time. The reallocation of resources from England into Wales provide important similarities to later colonial endeavors, especially in the large application of manpower to build successful colonies. Another similarity becomes the split between the use of local raw resources such as the stone and timber combined with the need for manufactured goods brought from England. The social changes also had a major impact. The construction of Edward's castles Conwy and Caernarvon replaced iconic locations of Welsh power. The accompanying Statute of Wales (1284) changed the Welsh legal landscape and forced the English legal system on the Welsh. By replacing Welsh locations of power and instituting legal reform …

In recent decades, the global impacts of unsustainable consumption and production patterns have become a leading topic of sustainability, and more recently, climate action discourse. At the policy level, green consumerism – an element of green capitalism – has been positioned as the pathway to more sustainable consumption and production (SCP) practices. Within this model, eco-labeling schemes are used to communicate various sustainability attributes, or conditions of production, to the consumer. This study set out to investigate whether SCP is achievable through green consumerism using a two-part case study that centers around the egg industry and specific hen welfare standards. The case study examines the effectiveness of egg eco-labeling schemes and related statements and images placed on egg packaging in informing consumers' purchasing decisions. It also examines the impacts of green consumerism on organic egg production in the presence of strong consumer demand for enhanced hen welfare standards. The results of the case study demonstrate that in the egg industry, green consumerism is not highly effective because consumers' purchasing decisions are often informed by vague and misleading information about conditions of production. Moreover, the presence of strong consumer demand has not resulted in enhanced hen welfare standards in organic production. …

The purpose of this sequential mixed-methods study was to explore the feelings, thoughts, critical incidents, and coping mechanisms of female high school principals and their experiences with the impostor phenomenon. A hierarchical multiple regression revealed that none of the demographic factors such as number of years as a head high school principal, age, percentage of female high school principals in the district, race/ethnicity, marital status, mentorship status, and community type, were statistically significant predictors of the varying levels of the impostor phenomenon. Eighteen female principals who represented an array of backgrounds and impostor phenomenon experiences were subsequently interviewed. The interviews were evaluated using interpretative phenomenological analysis. Seven themes, including several subthemes, emerged from the data. The themes were (1) childhood socialization, including the subthemes of gender roles, familial support, and early experiences of exclusion; (2) transitional uncertainty, including hiring self-doubt, school politics, and pressure to turn around a school; (3) the principalship, including relational leadership, constant pressure, and loneliness of the position; (4) critical incidents of the impostor phenomenon, including the subthemes of lack of experience, external criticism, and self-doubt; (5) gender issues, including a male dominated position, emotional capacity, and physical appearance, (6) coping strategies for the impostor phenomenon, …

This study addressed five key applications of paper spray mass spectrometry (PS-MS): (i) comparative analysis of the microporous substrate with the cellulose-based substrate in drug detection; (ii) detection of more than 190 fentanyl analogs with their fragmentation pattern can be implemented in the future reference for quicker, accurate and sensitive determination; (iii) exploring sweat in a fingerprint to be considered an alternate method to recognize non-invasive markers of metabolites, lipids, narcotics, and explosive residues that can be used in forensic testing applications; (iv) extending and improving better, cost-effective and quick real-time monitoring of the diseased stage using biofluid samples to obtain vastly different lipid information in viral infection such as COVID-19; and (v) mass spectral detection in chemical warfare agent (CWA) stimulant gas exposure with microporous structure absorbency capabilities in air quality monitoring. This novel synthetic material is known as Teslin® (PPG Industries), consisting of a microporous polyolefin single-layered silica matrix, can be used for precise, sensitive, selective, and rapid sample analysis with PS-MS. The Teslin® substrate provided longer activation time for samples and an active signal with a higher concentration of ion formation and mobility compared to cellulose-based papers. Direct analysis of multiple samples showed that, besides being more …

Hemolytic disorders are characterized by hemolysis and are prone to thrombosis. Previously, it has been shown that the RNA released from damaged blood cells activates clotting. However, the nature of RNA released from hemolysis is still elusive. We found that after hemolysis, the red blood cells from both zebrafish and humans release 5.8S rRNA. This RNA activated coagulation in zebrafish and human plasmas. Using both natural and synthetic 5.8S rRNA and its synthetic truncated fragments, we found that the 3'-end 26 nucleotide-long RNA (3'-26 RNA) and its stem-loop secondary structure were necessary and sufficient for clotting activity. Corn trypsin inhibitor (CTI), a coagulation factor XII (FXII) inhibitor blocked 3'-26 RNA-mediated coagulation activation of both zebrafish and human plasma. CTI also inhibited zebrafish coagulation in vivo. 5.8S rRNA monoclonal antibody inhibited both 5.8S rRNA- and 3'-26 RNA-mediated zebrafish coagulation activity. Both 5.8S rRNA and 3'-26 RNA activates normal human plasma but did not activate FXII-deficient human plasma. Taken together, these results suggested that the activation of zebrafish plasma is via FXII-like protein. Since zebrafish has no FXII and hepatocyte growth factor activator (Hgfac) has sequence similarities to FXII, we knocked down the hgfac in adult zebrafish. We found that plasma from …

Music plays an important role in Mexican funeral ceremonies, acting as a vehicle for men to acceptably express emotions of bereavement. As an important symbol of mexicanidad (Mexicanness), mariachi music is often used in traditional Catholic funerals, ritualizing grief equally as a mourning of loss and a celebration of the life of a deceased person. Although a form of popular music, mariachi's secular songs go through a process of sacralization, becoming meaningful sites for experiencing grief. As a musical expression of Mexico's idealized gender norms mariachi opens an aesthetic sphere for masculine grief to be expressed, experienced, and socialized in an acceptable form. The purpose of this thesis is to investigate the musical mediation of masculine grief, experienced and ritualized within funeral ceremonies, and observed through an ethnographic study of Mexican immigrant communities.

Colombian composer Jaime León (1921-2015) is known for his art songs. Most of the current scholarly literature about León defines him as a nationalist composer even though a majority of his songs do not appear to have nationalist traits. This document examines a representative selection of León's songs divided into three categories: songs influenced by the bambuco (the Colombian genre most present in his songs); songs whose text refers to Colombian culture; and songs without Colombian elements present in their text or music. After examination of these songs, my conclusion is that León, rather than being nationalist, was a cosmopolitan composer who used national elements as rhetorical tools in an isolated and experimental way.

This dissertation considers how district-level demographic factors favorable to women congressional candidates facilitate substantive representation of women's interests. I contribute to the existing research by linking the literature on women candidate emergence and electoral success with that on descriptive and substantive representation. Beyond simply asking whether and how women in Congress represent women's interests, I argue that the demographic characteristics of districts in which women are more likely to run and win public office also put women representing those districts in Congress in better position to cultivate feminist homestyles and substantively represent women's interests through legislative behavior. I examine whether women representatives in women-friendly districts are more likely than men representing similar districts, or women in less women-friendly districts, to sponsor legislation in women's issue areas, sponsors women's issue earmarks, and defect from party in women's issue roll-call votes. Overall, I find general support for my theory that district-level factors contribute to observed gender differences in legislative behavior in women's issue areas.

The current study explored how the variability or lack thereof in interlocking behavioral contingencies (IBC) may be brought under contextual control. Four undergraduates (two dyads) students participated in the current study. Dyads were instructed to play a game on a computer screen with the goal to earn as many "Congratulations" as possible. An ABABAB reversal design was used. A Lag 1 schedule of cultural consequence delivery for IBC topography was set in the variability (VAR) condition. During the repeated (REP) condition only one IBC topography was reinforced. For one of the two dyads, the variability of IBC topography was brought under contextual control. It is important to explore the behavioral processes at the cultural level to understand prediction and control of cultural phenomena.

When people access online health information, unfortunately, they have access to both clinically accurate and inaccurate information that they may then utilize to make informed personal health decisions. This research fills a gap in the literature of online health communities as they relate to chronic obstructive pulmonary disease (COPD). The conduct of this research required a multi-phased and multi-method approach, best presented in three distinct essays. In Essays 1 and 2, data gathering within two online health communities specific to COPD allowed this study to address three research questions: (1) what are the information needs of COPD patients that result in their participation in online health communities; (2) what are the information sources offered to the participants in these online communities; and (3) is the information obtained via those communities credible. Essay 1 harvested data from a moderated website hosted by a non-profit organization for patients with COPD and Essay 2 harvested data from a non-moderated Facebook group also serving this unique group. Data Miner, a Chrome extension designed to extract data, was used to collect data, key words and themes which brought an understanding of the health information needs of participants and identified what health information sources were preferred. …

One schedule of reinforcement that is used to decrease the rate of a target behavior is differential reinforcement of low rates (DRL). During this schedule, reinforcement is delivered for a target response if it occurs after a certain amount of time has passed since the last instance of this target response. The current study used a table-top game called PORTL and college student participants to investigate how collateral patterns develop and are disrupted during DRL schedules. After the participant developed a collateral pattern of behaviors with the objects, the researcher removed one of the objects that was part of the pattern and waited for a new pattern of behaviors to develop. Once the participant developed a new collateral pattern, the researcher removed a second object. This continued until there was only one object present. Results showed that the rate of reinforcement decreased following the removal of each object, then slowly increased as a new pattern developed.

Living and working abroad is one of the best ways to grow and learn about who you are and who you can become. The purpose of the project is to develop and articulate a radical reflexive praxis within the paradigm of the lived experiences of a Black female expatriate Christian mathematics educator. Grounded in the epistemological tradition of Black feminist thought, this study defines the intersectionality of my identity as a Black woman mathematics educator and explores ways it informs my interaction with students, parents and colleagues and inspires the quality of my instruction delivered in and out of the classroom setting. Through the qualitative practice of autoethnography, the use of personal narratives and field notes tell the story because storytelling adds context and allows the reader to both comprehend and participate in the experience. These narratives of re-reflection are used to explain how each of these identities were parlayed from a place of knowing and being known. Teaching is largely a white female Christian dominated profession and the tendency of the profession to propagate the traditional white male leader prototype confirms the need for more research for and by Black women educators. The rate of Black women yielding a …

This current study examined the job satisfaction and turnover intention of teachers working in a drop out recovery program using online curriculum. The subjects of the study were from one charter school district in north Texas that is designated as a drop out recovery program. This qualitative case study used interviews and focus groups to examine eight different areas of teacher job satisfaction to examine factors that influence a teacher's intent to quit or remain at a school. Previous research showed a connection between job satisfaction levels and the intent of a teacher to terminate employment or not. Previous research had not looked into this specific school environment. Results showed that compensation was the largest factor in job satisfaction but negative feelings could be overcome if other areas of importance for teachers brought positive job satisfaction. Overall, teachers in this environment were more likely to have high job satisfaction and less likely to terminate employment.

Overwhelming evidence supports the fact that music instruction greatly increases academic achievement on standardized test scores at the elementary, middle and high school level. When school districts face budget deficits, typically they alleviate the shortfall by eliminating music programs. Currently in Dallas ISD, teacher salaries are affected by how well a student performs on the STAAR exam. In this quantitative, causal-comparative study, 5th grade music STAAR mathematics scores are investigated to discover if instrumental music instruction using the Little Kids Rock Modern Band method improves academic achievement on the STAAR exam.

Brass musicians are known to experience a performance problem that is sometimes called valsalva maneuver or musical stuttering. This problem is known to cause difficulty starting a first note, tension in the throat, and tightness in the chest. Unfortunately, the research literature lacks sufficient details for evidence-based interventions. Therefore, the purpose of this study is to characterize and define this performance problem as experienced by brass musicians. An online epidemiologic survey was developed and deployed to collect data from brass musicians who have experienced this problem in their own playing. The survey was designed to acquire data in order to characterize and define the phenomenon through a biopsychosocial framework. The survey was also designed to assess whether this problem aligns with Altenmuller's heuristic model of motor control disruptions. A diverse group of brass musicians (n = 252) participated and offered relevant details for characterizing and defining this problem. Analysis of characteristic data suggests this problem is not a form of musical stuttering. Considering these data through Altenmuller's model suggests that this problem is experienced as a spectrum of motor disruptions that can develop into a unique type of musician's dystonia. While additional research is warranted, the results of this study …

With the growing popularity in video games, there has been increased concerns over the prolonged exposure to the entertainment medium. Problematic gaming is defined as a pattern of gaming behavior that causes significant impairment in personal, social, other important areas of functioning, often characterized by preoccupation and loss of interest in other areas. This study examined how problematic gaming behaviors may be influenced by insecure adult attachment and perceived social support from differing sources. It was hypothesized that avoidant attachment would have a significant direct and indirect effect (via perceived social support) on problematic gaming. In addition, perceived social support from online friends and from offline friends were hypothesized to moderate the relationship between attachment and problematic gaming, Participants were recruited from both SONA (n = 151) and Amazon's Mturk (n = 264) to complete an online research questionnaire that measured variables of interest. Results indicated that the direct and indirect effects of attachment avoidance on problematic gaming were supported in both subsamples but the moderator effects were not. Further exploratory analysis found that anxious attachment demonstrated a similar pattern as avoidant attachment, but with a significant moderator effect of perceived social support from online friends (enhance) on the attachment …

Cloud-based assistants like the Google Home and the Amazon Alexa have become ubiquitous in our homes. Users can simply communicate with the devices using a smartphone application. There are privacy concerns associated with cloud-based assistants. For example, users do not know what type of information is being sent to the device manufacturer, if the device is stealthily listening to conversations, data retention, or who else has access to the data. Privacy is about perception. The goal of this study is to determine user privacy concerns regarding cloud-based assistants by adopting a quantitative research method. The study used a privacy decision framework that lists three core components, which are technology controls, understanding user privacy preference, and government regulations. The research used Dervin's sensemaking model to describe users' privacy perception using the privacy decision framework and improved on a privacy perception survey instrument from previous dissertations. An understanding of user privacy concerns with cloud-based assistants is required to provide a comprehensive privacy guidance to stakeholders. The significance of this study is in the identification of the privacy perception of users of cloud-based assistants and the extent to which the components of the theoretical framework can impact user privacy perception. The results of …

Using an exploratory case study approach, this study examined the school leadership factors that contribute to building Latinx student social capital as well as the best practices for creating a more equitable AP program. Through this qualitative study, the organizational and leadership factors of the AP program at Stripes High School (pseudonym) were examined, and how these factors contributed toward closing the opportunity gap. This study used semi-structured interviews with district and campus leaders and an AP teachers focus group to determine leadership beliefs and actions that were successful in building an accessible and equitable advanced academics program for Latinx students, as well as an AP student focus group to triangulate the findings. The results of this study showed Latinx students, already lacking social capital, also face many barriers of different forms: systemic, structural and cultural in their educational opportunities for AP courses and exams. The case study campus overcame these barriers and increased equity by allowing Latinx students more access to AP courses and exams through district- and campus-level administrators working to remove barriers and hire and support the most capable and socially aware AP teachers who aim to grow and nurture the students who they serve. Based on …

Growth mixture modeling (GMM) is a useful tool for examining both between- and within-persons change over time and uncovering unobserved heterogeneity in growth trajectories. Importantly, the correct extraction of latent classes and parameter recovery can be dependent upon the type of covariates used. Time-varying covariates (TVCs) can influence class membership but are scarcely included in GMMs as predictors. Other times, TVCs are incorrectly modeled as time-invariant covariates (TICs). Additionally, problematic results can occur with the use of maximum likelihood (ML) estimation in GMMs, including convergence issues and sub-optimal maxima. In such cases, Bayesian estimation may prove to be a useful solution. The present Monte Carlo simulation study aimed to assess class enumeration accuracy and parameter recovery of GMMs with a TVC, particularly when a TVC has been incorrectly specified as a TIC. Both ML estimation and Bayesian estimation were examined. Results indicated that class enumeration indices perform less favorably in the case of TVC misspecification, particularly absolute class enumeration indices. Additionally, in the case of TVC misspecification, parameter bias was found to be greater than the generally accepted cutoff of 10%, particularly for variance estimates. It is recommended that researchers continue to use a variety of class enumeration indices during …

One of the most recognized icons of Mexico is the mariachi moderno tradition, which in the global popular imaginary, is associated with nostalgic, humorous, and emotional songs of love, heartache, death, drinking, and place. Inseparably fused to tequila and the historic charro figure, mariachi moderno completes a symbolic trinity of hetero-nationalist culture, conveyed within a popular imaginary of authentic mexicanidad (Mexican-ness). For mariachis and aficionados in Mexico, performative hypermasculine machismo acts as a perceptual baseline, structuring modes of feeling that signify an experience of authentic nationalist musicality This process is musically constructed in an incorporation of bodily movement, instruments, sound timbres, and symbolic clothing, simultaneously gestured with a heavy male-accent fusing an experience that feels genuinely Mexican. This reflexive signification is a consequence of the lived experience, shared dispositions, and competencies learned in the habitus, constituting real and imagined notions of hetero-nationalist culture. I refer to this musical semiosis as mariachismo, a neologism describing an intersubjective experience of machismo-infused mariachi subjectivity, ritualized through repeated gestures of sound, lyric, and corporeality. The semiotic power of mariachismo is most potent for subjects enculturated to Mexico's hetero-nationalist culture, shaped by popular imaginaries operationalizing gender and mexicanidad, connecting the two, making them feel unquestioned, …